<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">app</div>


  <script type="text/babel">
    
    const numbers = [10, 50, 60 ,20 , 70, 100, 30]

    numbers.filter((item, index, arr) => {
      return item >= 50 
    })
  </script>
</body>
</html>